DetailsView Update command doesn't update unless all of the fields are present!

I have a page that binds data from DB to a DetailsView.

I want to use the auto-generated Update command.

Everything went OK, and also updating was successful, but if I remove any field that I don't want to have chance to update, then the Update command doesn't update! the old values retain!

I开发者_如何学JAVA mean: if all of the fields are present in the detailsView, the update will be OK, otherwise, the update will NOT update any thing.

I've tried to mark the fields that I don't want to view as "Visible = 'false'" but with no good results!

How could I hide some fields?

Thanks :)

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Did you try to put the field you don't want to update at 'ReadOnly = True' too? This should mark them as to not be updated.

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Here is a way of doing it..

protected void DetailsView1_ModeChanged(object sender, EventArgs e)
{
    if (DetailsView1.CurrentMode == DetailsViewMode.Edit)
    {
        foreach (DataControlField fd in DetailsView1.Fields)
        {
            BoundField tmp = fd as BoundField;
            if (tmp != null)
                if (tmp.DataField == "YourReadOnlyColumnName")
                    tmp.ReadOnly = true;
        }

    }
}